Chaco Men's Brio Mid High Boot 100% Synthetic Imported Synthetic sole Shaft measures approximately 4.5" from arch Boot opening measures approximately 10" around Water-resistant, oiled full-grain leather upper with moc toe detail Waxed, round, cotton laces with embossed metal hardware Polyester mesh lining Mesh-lined luvseat pu footbed Non-marking Eco tread light 15 percent-recycled rubber compound with 3.5 mm deep lug